To set up a file to perform I/O you must declare
A) at least one variable, the contents of which will be written to the file
B) one or more file stream objects
C) a string object to store the file contents
D) All of these
E) None of these

Question

Quizplus · Accepted Answer

In order to set up a file to perform I/O, it is necessary to declare one or more file stream objects. This can be done using the iostream library and the appropriate class (e.g. ifstream for reading from a file, ofstream for writing to a file). Declaring variables or a string object may also be necessary depending on the type of I/O operation being performed, but a file stream object is the essential element for setting up file I/O.

To Set Up a File to Perform I/O You Must